@import url("https://fonts.googleapis.com/css2?family=IBM+Plex+Sans+TC:wght@400;500;600;700&family=Space+Grotesk:wght@500;600;700&display=swap");

:root {
  color-scheme: light;
  --bg: #efe7d3;
  --surface: #fffaf0;
  --fg: #191713;
  --muted: #6f675d;
  --border: #d6c7ab;
  --accent: #b84d2b;
  --ink: #0f1b1f;
  --shadow: 0 28px 80px rgba(41, 32, 20, 0.16);
  --radius-xl: 34px;
  --radius-lg: 24px;
  --radius-md: 16px;
  --max-width: 1440px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 8% 8%, color-mix(in oklch, var(--accent) 18%, transparent), transparent 28%),
    radial-gradient(circle at 88% 12%, color-mix(in oklch, var(--ink) 14%, transparent), transparent 30%),
    linear-gradient(180deg, var(--bg), color-mix(in oklch, var(--bg) 86%, var(--surface)) 46%, var(--surface));
  color: var(--fg);
  font-family: "IBM Plex Sans TC", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  background-image:
    linear-gradient(color-mix(in oklch, var(--fg) 7%, transparent) 1px, transparent 1px),
    linear-gradient(90deg, color-mix(in oklch, var(--fg) 7%, transparent) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: linear-gradient(180deg, var(--fg), transparent 72%);
  opacity: 0.36;
}

button,
input,
textarea,
select {
  font: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

img {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
}

.grain {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: 0.18;
  background-image:
    radial-gradient(circle at 20% 30%, var(--fg) 0 1px, transparent 1px),
    radial-gradient(circle at 80% 20%, var(--fg) 0 1px, transparent 1px),
    radial-gradient(circle at 50% 80%, var(--fg) 0 1px, transparent 1px);
  background-size: 37px 41px, 53px 47px, 71px 67px;
  mix-blend-mode: multiply;
}

.topnav {
  position: sticky;
  top: 0;
  z-index: 20;
  width: min(var(--max-width), calc(100% - 36px));
  margin: 16px auto 0;
  display: grid;
  grid-template-columns: auto minmax(260px, 1fr) auto auto;
  align-items: center;
  gap: 14px;
  padding: 10px 14px;
  border: 1px solid color-mix(in oklch, var(--border) 84%, transparent);
  border-radius: 28px;
  background: color-mix(in oklch, var(--surface) 78%, transparent);
  box-shadow: 0 18px 60px color-mix(in oklch, var(--fg) 10%, transparent);
  backdrop-filter: blur(18px);
}

.brand {
  font-family: "Space Grotesk", "IBM Plex Sans TC", sans-serif;
  font-weight: 700;
  letter-spacing: -0.03em;
  white-space: nowrap;
}

.topnav nav {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 0.92rem;
}

.topnav nav a {
  border-radius: 999px;
  padding: 8px 12px;
  transition: background 160ms ease, color 160ms ease;
}

.topnav nav a:hover {
  color: var(--fg);
  background: color-mix(in oklch, var(--fg) 7%, transparent);
}

.shell {
  width: min(var(--max-width), calc(100% - 36px));
  margin: 0 auto;
  padding: 26px 0 52px;
}

.panel {
  background: color-mix(in oklch, var(--surface) 86%, transparent);
  border: 1px solid color-mix(in oklch, var(--border) 86%, transparent);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.hero {
  position: relative;
  overflow: hidden;
  min-height: 560px;
  border-radius: var(--radius-xl);
  padding: clamp(26px, 4vw, 54px);
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(280px, 0.8fr);
  gap: clamp(26px, 4vw, 64px);
  align-items: end;
  background:
    linear-gradient(135deg, color-mix(in oklch, var(--ink) 96%, transparent), color-mix(in oklch, var(--fg) 84%, transparent)),
    var(--ink);
  color: var(--surface);
}

.hero::before {
  content: "";
  position: absolute;
  inset: 18px;
  pointer-events: none;
  border: 1px solid color-mix(in oklch, var(--surface) 14%, transparent);
  border-radius: calc(var(--radius-xl) - 12px);
}

.hero::after {
  content: "";
  position: absolute;
  right: -11%;
  bottom: -28%;
  width: 52%;
  aspect-ratio: 1;
  border-radius: 50%;
  background:
    radial-gradient(circle, color-mix(in oklch, var(--accent) 74%, transparent), transparent 68%),
    radial-gradient(circle, color-mix(in oklch, var(--surface) 22%, transparent), transparent 72%);
  filter: blur(4px);
  opacity: 0.7;
}

.hero-copy,
.hero-stats {
  position: relative;
  z-index: 1;
}

.eyebrow {
  margin: 0 0 14px;
  color: color-mix(in oklch, var(--accent) 72%, var(--surface));
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-family: "Space Grotesk", monospace;
  font-size: 0.75rem;
  font-weight: 700;
}

.hero h1 {
  max-width: 12ch;
  margin: 0;
  font-family: "Space Grotesk", "IBM Plex Sans TC", sans-serif;
  font-size: clamp(3rem, 7vw, 7.5rem);
  line-height: 0.9;
  letter-spacing: -0.075em;
}

.lede {
  max-width: 58ch;
  margin: 24px 0 0;
  color: color-mix(in oklch, var(--surface) 72%, transparent);
  font-size: clamp(1rem, 1.35vw, 1.18rem);
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.hero-stats {
  display: grid;
  gap: 12px;
  align-self: stretch;
  align-content: end;
}

.stat-card {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px 18px;
  align-items: end;
  padding: 18px 0;
  border-top: 1px solid color-mix(in oklch, var(--surface) 18%, transparent);
}

.stat-label {
  color: color-mix(in oklch, var(--surface) 52%, transparent);
  font-family: "Space Grotesk", monospace;
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.stat-value {
  grid-row: span 2;
  font-family: "Space Grotesk", monospace;
  font-size: clamp(2rem, 4vw, 3.6rem);
  font-weight: 700;
  letter-spacing: -0.06em;
  line-height: 0.9;
}

.stat-caption {
  color: color-mix(in oklch, var(--surface) 62%, transparent);
  font-size: 0.9rem;
  line-height: 1.45;
}

.search-box {
  display: grid;
  gap: 6px;
}

.search-box span {
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.13em;
  font-family: "Space Grotesk", monospace;
  font-size: 0.72rem;
  font-weight: 700;
}

.search-box input {
  width: 100%;
  border: 1px solid color-mix(in oklch, var(--fg) 12%, transparent);
  border-radius: 999px;
  padding: 11px 16px;
  color: var(--fg);
  background: color-mix(in oklch, var(--surface) 70%, transparent);
  outline: none;
  transition: border-color 160ms ease, box-shadow 160ms ease;
}

.search-box input::placeholder {
  color: color-mix(in oklch, var(--muted) 72%, transparent);
}

.search-box input:focus {
  border-color: color-mix(in oklch, var(--accent) 62%, transparent);
  box-shadow: 0 0 0 4px color-mix(in oklch, var(--accent) 18%, transparent);
}

.control-meta {
  min-width: 160px;
  display: grid;
  gap: 2px;
  justify-items: end;
}

.result-count {
  font-family: "Space Grotesk", monospace;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  white-space: nowrap;
}

.result-subcopy {
  color: var(--muted);
  font-size: 0.78rem;
  white-space: nowrap;
}

.chip-panel {
  margin-top: 18px;
  border-radius: var(--radius-lg);
  padding: 24px;
}

.chip-panel-header {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: end;
  flex-wrap: wrap;
}

.chip-panel h2,
.filters h3 {
  margin: 0;
  font-family: "Space Grotesk", "IBM Plex Sans TC", sans-serif;
  letter-spacing: -0.045em;
}

.chip-panel p,
.filters .group-note {
  max-width: 46ch;
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 0.94rem;
}

.suggested-chips,
.chip-list {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
}

.suggested-chips {
  margin-top: 18px;
}

.layout {
  margin-top: 18px;
  display: grid;
  grid-template-columns: 310px minmax(0, 1fr);
  gap: 18px;
  align-items: start;
}

.filters,
.results {
  border-radius: var(--radius-xl);
  padding: 22px;
}

.filters {
  position: sticky;
  top: 100px;
  max-height: calc(100vh - 118px);
  overflow: auto;
}

.filters::-webkit-scrollbar,
.dialog-body::-webkit-scrollbar,
.prompt-block::-webkit-scrollbar {
  width: 10px;
}

.filters::-webkit-scrollbar-thumb,
.dialog-body::-webkit-scrollbar-thumb,
.prompt-block::-webkit-scrollbar-thumb {
  background: color-mix(in oklch, var(--fg) 18%, transparent);
  border-radius: 999px;
}

.filter-group + .filter-group {
  margin-top: 24px;
}

.filter-group {
  padding-bottom: 20px;
  border-bottom: 1px solid color-mix(in oklch, var(--fg) 10%, transparent);
}

.filter-group:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.group-head {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  align-items: baseline;
}

.group-count {
  color: var(--muted);
  font-family: "Space Grotesk", monospace;
  font-size: 0.84rem;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid color-mix(in oklch, var(--fg) 12%, transparent);
  background: color-mix(in oklch, var(--surface) 54%, transparent);
  color: var(--fg);
  border-radius: 999px;
  padding: 9px 12px;
  cursor: pointer;
  transition: transform 160ms ease, border-color 160ms ease, background 160ms ease, color 160ms ease;
}

.chip:hover {
  transform: translateY(-1px);
  border-color: color-mix(in oklch, var(--accent) 48%, transparent);
}

.chip.active {
  background: var(--fg);
  color: var(--surface);
  border-color: var(--fg);
}

.chip .count {
  opacity: 0.66;
  font-family: "Space Grotesk", monospace;
  font-size: 0.82rem;
}

.results {
  min-height: 620px;
  background: color-mix(in oklch, var(--surface) 74%, transparent);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.case-card {
  position: relative;
  overflow: hidden;
  display: grid;
  grid-template-rows: auto 1fr;
  content-visibility: auto;
  contain-intrinsic-size: 420px 560px;
  min-height: 100%;
  border: 1px solid color-mix(in oklch, var(--fg) 11%, transparent);
  border-radius: 26px;
  background: var(--surface);
  cursor: pointer;
  transition: transform 180ms ease, border-color 180ms ease, box-shadow 180ms ease;
}

.case-card:hover,
.case-card:focus-visible {
  transform: translateY(-4px);
  border-color: color-mix(in oklch, var(--accent) 52%, transparent);
  box-shadow: 0 24px 60px color-mix(in oklch, var(--fg) 16%, transparent);
  outline: none;
}

.thumb {
  aspect-ratio: 1.12 / 1;
  overflow: hidden;
  background:
    linear-gradient(135deg, color-mix(in oklch, var(--accent) 14%, transparent), color-mix(in oklch, var(--ink) 10%, transparent)),
    var(--bg);
}

.thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 260ms ease;
}

.case-card:hover .thumb img {
  transform: scale(1.035);
}

.card-body {
  padding: 16px;
  display: grid;
  gap: 12px;
}

.card-title {
  margin: 0;
  font-family: "Space Grotesk", "IBM Plex Sans TC", sans-serif;
  font-size: 1.02rem;
  line-height: 1.32;
  letter-spacing: -0.035em;
}

.card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  color: var(--muted);
  font-size: 0.82rem;
}

.card-summary {
  margin: 0;
  color: color-mix(in oklch, var(--fg) 72%, transparent);
  line-height: 1.62;
  font-size: 0.92rem;
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
}

.tag-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border-radius: 999px;
  padding: 6px 9px;
  background: color-mix(in oklch, var(--fg) 5%, transparent);
  border: 1px solid color-mix(in oklch, var(--fg) 8%, transparent);
  color: var(--muted);
  font-size: 0.76rem;
}

.card-footer {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  align-items: center;
  margin-top: auto;
  color: var(--muted);
  font-family: "Space Grotesk", monospace;
  font-size: 0.78rem;
}

.muted {
  color: var(--muted);
}

.load-more {
  width: 100%;
  margin-top: 18px;
  padding: 15px 18px;
  border-radius: 18px;
  border: 1px solid color-mix(in oklch, var(--fg) 12%, transparent);
  background: color-mix(in oklch, var(--surface) 54%, transparent);
  color: var(--fg);
  cursor: pointer;
  font-weight: 700;
  transition: border-color 160ms ease, transform 160ms ease, background 160ms ease;
}

.load-more:hover {
  transform: translateY(-1px);
  border-color: color-mix(in oklch, var(--accent) 46%, transparent);
  background: var(--surface);
}

.load-more[hidden] {
  display: none;
}

.action-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  border: 0;
  border-radius: 999px;
  padding: 12px 18px;
  cursor: pointer;
  font-weight: 700;
  transition: transform 160ms ease, box-shadow 160ms ease, background 160ms ease, color 160ms ease;
}

.action-button:hover {
  transform: translateY(-1px);
}

.action-button.primary {
  background: var(--accent);
  color: var(--surface);
  box-shadow: 0 18px 36px color-mix(in oklch, var(--accent) 26%, transparent);
}

.action-button.secondary {
  background: color-mix(in oklch, var(--surface) 10%, transparent);
  color: var(--surface);
  border: 1px solid color-mix(in oklch, var(--surface) 18%, transparent);
}

.chip-panel .action-button.secondary {
  color: var(--fg);
  border-color: color-mix(in oklch, var(--fg) 12%, transparent);
}

.case-dialog {
  width: min(1240px, calc(100vw - 24px));
  max-height: min(92vh, 1100px);
  border: 1px solid color-mix(in oklch, var(--surface) 20%, transparent);
  border-radius: 30px;
  padding: 0;
  background: var(--surface);
  color: var(--fg);
  box-shadow: 0 38px 110px color-mix(in oklch, var(--fg) 34%, transparent);
}

.case-dialog::backdrop {
  background: color-mix(in oklch, var(--fg) 64%, transparent);
  backdrop-filter: blur(8px);
}

.dialog-shell {
  margin: 0;
  padding: 22px;
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
  gap: 22px;
  position: relative;
}

.dialog-close {
  position: absolute;
  top: 16px;
  right: 16px;
  z-index: 3;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 1px solid color-mix(in oklch, var(--fg) 10%, transparent);
  background: color-mix(in oklch, var(--surface) 82%, transparent);
  color: var(--fg);
  font-size: 1.6rem;
  line-height: 1;
  cursor: pointer;
}

.dialog-media {
  position: sticky;
  top: 0;
  display: grid;
  gap: 12px;
  align-content: start;
}

.dialog-media img {
  width: 100%;
  height: auto;
  border-radius: 24px;
  background: var(--bg);
  border: 1px solid color-mix(in oklch, var(--fg) 10%, transparent);
}

.dialog-image-link {
  display: block;
  border-radius: 24px;
  cursor: zoom-in;
}

.dialog-body {
  display: grid;
  gap: 16px;
  align-content: start;
  min-height: 0;
  overflow: auto;
  padding-right: 4px;
}

.dialog-nav {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  padding-right: 58px;
}

.dialog-nav-button {
  min-height: 42px;
  border: 1px solid color-mix(in oklch, var(--fg) 12%, transparent);
  border-radius: 999px;
  background: color-mix(in oklch, var(--fg) 5%, transparent);
  color: var(--fg);
  cursor: pointer;
  font-weight: 700;
  transition: transform 160ms ease, border-color 160ms ease, opacity 160ms ease;
}

.dialog-nav-button:hover:not(:disabled) {
  transform: translateY(-1px);
  border-color: color-mix(in oklch, var(--accent) 48%, transparent);
}

.dialog-nav-button:disabled {
  cursor: not-allowed;
  opacity: 0.38;
}

.dialog-header {
  display: flex;
  gap: 12px;
  justify-content: space-between;
  align-items: start;
  padding-right: 58px;
}

.dialog-kicker {
  margin: 0 0 8px;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-family: "Space Grotesk", monospace;
  font-size: 0.74rem;
  font-weight: 700;
}

.dialog-header h2 {
  margin: 0;
  font-family: "Space Grotesk", "IBM Plex Sans TC", sans-serif;
  font-size: clamp(1.7rem, 2.4vw, 3rem);
  line-height: 1.05;
  letter-spacing: -0.055em;
}

.dialog-header .action-button {
  flex: 0 0 auto;
  max-width: 180px;
  white-space: normal;
}

.dialog-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.prompt-block {
  margin: 0;
  padding: 18px;
  border-radius: 22px;
  border: 1px solid color-mix(in oklch, var(--fg) 10%, transparent);
  background: color-mix(in oklch, var(--fg) 5%, transparent);
  color: var(--fg);
  white-space: pre-wrap;
  word-break: break-word;
  line-height: 1.75;
  max-height: 54vh;
  overflow: auto;
}

.empty-state {
  grid-column: 1 / -1;
  padding: 42px 24px;
  border-radius: 24px;
  border: 1px dashed color-mix(in oklch, var(--fg) 16%, transparent);
  background: color-mix(in oklch, var(--fg) 4%, transparent);
  color: var(--muted);
  text-align: center;
}

@media (max-width: 1240px) {
  .card-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 1040px) {
  .topnav {
    grid-template-columns: 1fr auto;
  }

  .brand {
    grid-column: 1;
  }

  .topnav nav {
    grid-column: 2;
    grid-row: 1;
  }

  .topnav-search {
    grid-column: 1 / -1;
  }

  .topnav-meta {
    grid-column: 1 / -1;
    justify-items: start;
  }

  .hero {
    min-height: auto;
    grid-template-columns: 1fr;
  }

  .control-meta {
    min-width: 0;
  }

  .layout {
    grid-template-columns: 1fr;
  }

  .filters {
    position: static;
    max-height: none;
  }
}

@media (max-width: 760px) {
  .topnav {
    width: min(var(--max-width), calc(100% - 20px));
    align-items: flex-start;
    border-radius: 24px;
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .brand,
  .topnav nav {
    grid-column: 1;
    grid-row: auto;
  }

  .topnav nav {
    width: 100%;
    overflow-x: auto;
  }

  .shell {
    width: min(var(--max-width), calc(100% - 20px));
    padding-top: 14px;
  }

  .hero,
  .filters,
  .results {
    padding-left: 16px;
    padding-right: 16px;
  }

  .hero h1 {
    font-size: clamp(2.65rem, 14vw, 4.6rem);
  }

  .card-grid {
    grid-template-columns: 1fr;
  }

  .dialog-shell {
    grid-template-columns: 1fr;
  }

  .dialog-media {
    position: static;
  }
}

@media (max-width: 560px) {
  .hero-actions {
    display: grid;
  }

  .action-button,
  .chip {
    width: 100%;
  }

  .chip {
    justify-content: space-between;
  }

  .dialog-header {
    flex-direction: column;
    padding-right: 0;
  }

  .dialog-nav {
    padding-top: 52px;
    padding-right: 0;
  }

  .dialog-header .action-button {
    max-width: none;
  }

  .dialog-close {
    top: 10px;
    right: 10px;
  }
}